Optical member for display apparatus and filter for display apparatus having the same

Abstract

Disclosed are an optical member for a display apparatus and a filter for a display apparatus having the same. The optical member for the display apparatus includes a transparent resin material, and a first optical pattern formed on a surface of the transparent resin material and including a plurality of first shielding parts filled with a light absorbing substance and a conductive substance.

1 . An optical member for a display apparatus, the optical member comprising:
 a transparent resin material; and   a first optical pattern formed on a surface of the transparent resin material, and including a plurality of first shielding parts filled with a light absorbing substance and a conductive substance.   
     
     
         2 . The optical member of  claim 1 , further comprising:
 a second optical pattern formed on the first optical pattern, and including a plurality of second shielding parts crossing the first optical pattern and having a conductive substance.   
     
     
         3 . The optical member of  claim 2 , further comprising:
 an electrode disposed on at least a portion of an edge portion of the transparent resin material in such a manner as to cover an end of the second optical pattern.   
     
     
         4 . The optical member of  claim 2 , wherein the first optical pattern has a stripe shaped-pattern parallel to a side of the transparent resin material, and the second optical pattern has a stripe shaped-pattern perpendicular to the first optical pattern. 
     
     
         5 . The optical member of  claim 1 , wherein each of the first shielding parts has a wedge shape, a trapezoid shape, a U-shape, or a semicircular shape in its cross-sectional area. 
     
     
         6 . The optical member of  claim 3 , wherein a width of the electrode is about 10 to 50 mm. 
     
     
         7 . The optical member of  claim 3 , wherein the electrode is disposed on a first edge portion adjacent to a side of the transparent resin material and a second edge portion adjacent to another side of the transparent resin material crossing the side of the transparent resin material. 
     
     
         8 . The optical member of  claim 3 , wherein the electrode is disposed on the entire edge portion of the transparent resin material. 
     
     
         9 . The optical member of  claim 2 , wherein each line width of the second shielding parts is about 5 to 30 μm, each thickness thereof is less than about 30 μm, and each interval therebetween is about 0.3 to 100 mm. 
     
     
         10 . The optical member of  claim 1 , wherein each of the first shielding parts includes an electromagnetic wave-shielding portion with a conductive substance and an external light-shielding portion with a light absorbing substance. 
     
     
         11 . The optical member of  claim 10 , wherein the external light-shielding portion is formed on an upper portion of each of the first shielding parts, and the electromagnetic wave-shielding portion is formed on a lower portion of each of the first shielding parts. 
     
     
         12 . The optical member of  claim 10 , wherein the electromagnetic wave-shielding portion is formed on an upper portion of the each of the first shielding parts, and the external light-shielding portion is formed on a lower portion of each of the first shielding parts. 
     
     
         13 . The optical member of  claim 1 , wherein the conductive substance is at least one substance selected from the group consisting of a carbon nanotube, a metal powder, and a metal oxide powder. 
     
     
         14 . The optical member of  claim 1 , wherein the conductive substance includes metal particles having a mean particle size of 10 μm or less. 
     
     
         15 . The optical member of  claim 10 , wherein a volume ratio between the light absorbing substance and the conductive substance in the external light-shielding portion is about 9:1 to 7:3. 
     
     
         16 . The optical member of  claim 10 , wherein a volume ratio between the light absorbing substance and the conductive substance in the electromagnetic wave-shielding portion is about 1:9 to 3:7. 
     
     
         17 . The optical member of  claim 1 , wherein each of the first shielding parts includes:
 to 40 wt % of a polymer resin,   1 to 10 wt % of the light absorbing substance, and   50 to 85 wt % of the conductive substance.   
     
     
         18 . The optical member of  claim 2 , wherein the second shielding parts are formed by screen-printing with a metal paste or by inkjet-coating with a metal paste. 
     
     
         19 . The optical member of  claim 3 , wherein the electrode is formed using a metal paste or a metal tape. 
     
     
         20 . A filter for a display apparatus, the filter comprising:
 a transparent substrate;   an optical member formed on a surface of the transparent substrate and including:   i) a transparent resin material, and   ii) a first optical pattern formed on a surface of the transparent resin material and including a plurality of first shielding parts filled with a light absorbing substance and a conductive substance;   a color correction layer formed on the optical member and containing at least one colorant for selectively absorbing a light; and   an anti-reflection layer formed on another surface of the transparent substrate.   
     
     
         21 . The filter of  claim 20 , wherein the optical member further includes:
 iii) a second optical pattern formed on the first optical pattern, and including a plurality of second shielding parts crossing the first optical pattern and having a conductive substance.   
     
     
         22 . The filter of  claim 20 , wherein each of the first shielding parts includes an external light-shielding portion with the light absorbing substance, and an electromagnetic wave-shielding portion with the conductive substance. 
     
     
         23 . The filter of  claim 20 , wherein each of the first shielding parts has a wedge shape, a trapezoid shape, a U-shape, or a semicircular shape in its cross-sectional area, and includes an external light-shielding portion in which a concentration of the light absorbing substance is greater than that of the conductive substance, and an electromagnetic wave-shielding portion in which a concentration of the conductive substance is greater than that of the light absorbing substance. 
     
     
         24 . A filter for a display apparatus, the filter comprising:
 a transparent substrate;   an electromagnetic wave-shielding layer formed on a surface of the transparent substrate and including a conductive layer formed by alternatively stacking a metal thin film and a metal oxide thin film one to three times;   an optical member formed on the electromagnetic wave-shielding layer and including:   i) a transparent resin material; and   ii) a first optical pattern formed on a surface of the transparent resin material and including an external light-shielding portion with a light absorbing substance and an electromagnetic wave-shielding portion with a conductive substance, respectively;   a color correction layer formed on the optical member and containing at least one colorant for selectively absorbing a light; and   an anti-reflection layer formed on another surface of the transparent substrate.   
     
     
         25 . The filter of  claim 24 , wherein the optical member further includes a second optical pattern formed on the first optical pattern, and including a plurality of second shielding parts crossing the first optical pattern and having a conductive substance.